The height of a window is 0. 6 feet less than 2. 5 times its width. If the height of the window is 4. 9 feet, which equation can be used to determine x, the width of the window? 2. 5 x 0. 6 = 4. 9 2. 5 x minus 0. 6 = 4. 9 0. 6 x 2. 5 = 4. 9 0. 6 x minus 2. 5 = 4. 9.